Only when VCR technology became available in the 1970s, making it easier to record and erase information, did video surveillance start to become more common.
The definition of household goods was changed limiting electronic equipment to one radio, one television, one VCR, and one personal computer with related equipment.
Clients of media servers issue VCR-style commands, such as "play" and "pause", to facilitate real-time control of playback of media files from the server.
